大连东软小学期C语言项目学生成绩管理系统代码

1、/*链表版学生成绩管理系统的main函数与链表构建模块的代码*/#include <stdio.h>#include <stdlib.h>#include <string.h>struct STUDENT char name 20 ;int score;struct STUDENT * next; void showMenu( );struct STUDENT* createList( );void outputList(struct STUDENT * head);void searchByName(struct STUDENT * head);void

2、deleteByName(struct STUDENT * head);struct STUDENT * add(struct STUDENT * head);int main( ) struct STUDENT *head = NULL;int select;while(1)showMenu();scanf("%d",&select);switch(select)case 1:head = createList( );break;case 2:outputList(head);break;case 3:searchByName(head);break;case 4

3、:deleteByName(head);break;case 5:head = add(head);break;case 6:printf("系统即将退出.");exit(0);return 0;/*显示系统菜单*/void showMenu( )printf("1-录入学生成绩n");printf("2-输出成绩清单n");printf("3-按姓名搜索记录n");printf("4-按姓名删除记录n");printf("5-追加录入学生成绩n");printf("

4、;6-退出系统n");printf("请选择(1-6):n");/*链表构建模块*/struct STUDENT* createList( )struct STUDENT * head,*p,*q;char name 20 ;p = (struct STUDENT *)malloc(sizeof(struct STUDENT); /p指针总指向新开辟的节点head = p; /头结点中没有学生成绩信息q = p; /q指针总是指向尾节点q->next = NULL; /标志链表的结束printf("请输入学生姓名（输入none表示输入结束）：&qu

5、ot;);scanf("%s", name);while(strcmp(name, "none") !=0 ) / name是none标志输入结束 p = (struct STUDENT *)malloc(sizeof(struct STUDENT); /申请新的节点内存 strcpy(p->name, name); printf("请输入分数："); scanf("%d", &p->score); q->next = p; /把新节点挂到原尾节点之后 q = q->next; /q

6、指针指向新的尾节点 printf("请输入姓名（输入none表示输入结束）："); scanf("%s", name);q->next = NULL; /标志链表的结束return head;/*输出链表中的所有记录清单*/void outputList(struct STUDENT * head )struct STUDENT * p;if(head=NULL)printf("链表为空。n");return;for ( p = head->next; p != NULL; p = p->next ) printf(

7、 "姓名： %s , 分数： %d n", p->name, p->score );/*根据姓名在链表中查找记录,并输出其信息*/void searchByName(struct STUDENT * head)char name20;struct STUDENT * p;if(head=NULL)printf("链表为空。n");return;printf("请输入要查找的学生的姓名：");scanf("%s",name);for(p=head->next;p!=NULL;p=p->next

8、)if(strcmp(p->name,name)=0)break;if(p=NULL)printf("没有找到！");elseprintf( "姓名： %s , 分数： %d n", p->name, p->score );/*根据姓名删除链表的中的学生记录*/void deleteByName(struct STUDENT * head)struct STUDENT *p,*q;char name20;if(head=NULL)printf("链表为空。n");return;printf("请输入要删除的

9、学生的姓名：");scanf("%s",name);for(p=head->next,q=head;p!=NULL;p=p->next,q=q->next)if(strcmp(p->name,name)=0)q->next=p->next;if(p=NULL)printf("删除结束。n");elsefree(p);/*在链表的尾部，添加一个节点*/struct STUDENT * add(struct STUDENT * head)struct STUDENT * p,*q;if(head=NULL)/若head指针为空，则建一个没有数据的头结点。p = (struct STUDENT *)malloc(sizeof(struct STUDENT); head = p; /头结点中没有学生成绩信息head->next = NULL; p = (struct STUDENT *)malloc(sizeof(struct STUDENT); /申请新的节点内存printf("请输入姓名：");scanf("%s",p->name);printf("请输入分数：");scanf("%d&